- Joined
- Dec 27, 2011
- Messages
- 2,062
- Points
- 48
I suggest everyone replace the caps with 22uF X5R or 22uF X7R.
I think the original part list and schematic should be updated too.
I am a BIG fan of good heat property components, but just to try and keep very focused on the specific issue at hand, I don't think heat rating was the issue here since the diodes have been dying on startup.
I definitely think 10uF vs 22uF is likely to be more important than X5R or X7R in this particular case, and the possibility that MAYBE some of them were eBay caps of unknown pedigree could be an issue as well.
It would be nice if RE, Cilegray and Moh could chime in on what caps they were using.
Also, LeQuack, just to confirm, but I am pretty sure you used the Kemet 22uF/16v/X7R 0805 caps that I sent you on the 12x that you have, correct? And that one is fine?
It is definitely LOOKING like the caps are the issue, but it would be more certain if we knew which caps were on each driver that has experienced issues and which caps are on the drivers that are on 12x or single mode builds that are still working.
Also whether anyone was using Ebay caps that might be junk, or just name brand caps that don't have enough capacitance to do the job correctly.
If it turns out that 10uF is the issue then the OP should be changed as I don't think it is reasonable to expect someone to see a nicely laid out parts list in the OP and somehow know that they should skim 30+ pages and ~a thousand posts to find out that it might be better to use 22uF caps.